Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
---
CHANGES | 1 +
prog/detect/sensors-detect | 68 ++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 69 insertions(+)
diff --git a/CHANGES b/CHANGES
index 3390942..a16e7be 100644
--- a/CHANGES
+++ b/CHANGES
@@ -13,6 +13,7 @@ SVN HEAD
Add detection of ITE IT8620E and IT8623E
Add detection of TMP441, TMP442, LM95233, LM95234,
and LM95235
+ Add detection of NCT7802Y
3.3.5 "Happy Birthday Beddy" (2014-01-22)
libsensors: Improve documentation of two functions
diff --git a/prog/detect/sensors-detect b/prog/detect/sensors-detect
index df9a408..159d2cb 100755
--- a/prog/detect/sensors-detect
+++ b/prog/detect/sensors-detect
@@ -733,6 +733,11 @@ use vars qw(@i2c_adapter_names);
i2c_addrs => [0x2c..0x2f],
i2c_detect => sub { w83795_detect(@_); },
}, {
+ name => "Nuvoton NCT7802Y",
+ driver => "to-be-written",
+ i2c_addrs => [0x28..0x2f],
+ i2c_detect => sub { nct7802_detect(@_); },
+ }, {
name => "Winbond W83627HF",
driver => "use-isa-instead",
i2c_addrs => [0x28..0x2f],
@@ -5483,6 +5488,69 @@ sub w83795_detect
}
# Registers used:
+# 0x00: bank selection (Bank 0, 1)
+# 0x40, 0x80, 0xc0: bank selection (Bank 1)
+# 0x01, 0x41, 0x81, 0xc1: PECI control register 1 (Bank 1)
+# 0x02, 0x42, 0x82, 0xc2: PECI control register 2 (Bank 1)
+# 0x03, 0x43, 0x83, 0xc3: PECI control register 3 (Bank 1)
+# 0xfd: Vendor ID (Bank 0)
+# 0xfe: Device ID (Bank 0)
+# 0xff: Device Revision (Bank 0)
+sub nct7802_detect
+{
+ my ($bank, $reg, $pc1, $pc2, $pc3);
+ my ($file, $addr) = @_;
+
+ $bank = i2c_smbus_read_byte_data($file, 0x00);
+ return unless ($bank == 0x00 or $bank == 0x01);
+
+ # we can not do much if bank 1 is selected
+ if ($bank == 0x01) {
+ # We can not use bit masks since all bits
+ # (including reserved bits) can be set.
+ $pc1 = i2c_smbus_read_byte_data($file, 0x01);
+ $pc2 = i2c_smbus_read_byte_data($file, 0x02);
+ $pc3 = i2c_smbus_read_byte_data($file, 0x03);
+
+ # Register values repeat every 64 registers on bank 1.
+ # Check the first four registers of each group.
+ for (my $i = 0x40; $i <= 0xc0; $i += 0x40) {
+ $reg = i2c_smbus_read_byte_data($file, $i);
+ return if $reg != 0x01;
+ $reg = i2c_smbus_read_byte_data($file, $i + 1);
+ return if $reg != $pc1;
+ $reg = i2c_smbus_read_byte_data($file, $i + 2);
+ return if $reg != $pc2;
+ $reg = i2c_smbus_read_byte_data($file, $i + 3);
+ return if $reg != $pc3;
+ }
+ return 3;
+ }
+
+ # bank 0, can support real chip detection
+
+ $reg = i2c_smbus_read_byte_data($file, 0xfd);
+ return unless ($reg == 0x50);
+
+ $reg = i2c_smbus_read_byte_data($file, 0xfe);
+ return unless $reg == 0xc3;
+
+ $reg = i2c_smbus_read_byte_data($file, 0xff);
+ return unless ($reg & 0xf0) == 0x20;
+
+ $reg = i2c_smbus_read_byte_data($file, 0x05);
+ return unless ($reg & 0x1f) == 0x00;
+
+ $reg = i2c_smbus_read_byte_data($file, 0x08);
+ return unless ($reg & 0x3f) == 0x00;
+
+ $reg = i2c_smbus_read_byte_data($file, 0x0f);
+ return unless ($reg & 0x3f) == 0x00;
+
+ return 8;
+}
+
+# Registers used:
# 0x48: Full I2C Address
# 0x4e: Vendor ID byte selection
# 0x4f: Vendor ID
--
1.9.1
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